Adjustable third or fourth point support for brake beams



Oct. 30, 1928.

H. W. EKHOLM ADJUSTABLE THIRD 0R FOURTH POINT SUPPORT-FOR BRAKE BEAMS Filed April 25, 1927 2 Sheets-Sheet 1 Oct. 30, 1928. 1,689,333

H. w.- EKHOLM ADJUSTABLE THIRD OR FOURTH POINT SUPPORT FOR BRAKE BEAMS Filed April 25, 1927 2 Sheets-Sheet. 2

Patented Oct. 30, 1928.

'UNITED STATES PATENT OFFICE.

HERBERT W. EKHOLM, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHICAGO RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS), A CORPORATION OF ILLINOIS.

ADJUSTABLE THIRD OR FOURTH POINT SUPPORT FOR BRAKE BEAMS.

Application filed April 25, 1927. Serial No. 186,283.

This invention relates to new and useful improvements in third or fourth point supports for brake beams and has for its objects the provision of a chair or rubbing shoe carried by a brake beam and adjustable substantially in a horizontal plane to compensate for the varying distances between the brake beam and the track member, which latter is disposed beneath the brake beam and is inclined upwardly.

In commercial practice, the distance between the beams and the supports or track members varies due to variations in manufacture of parts and of the truck assemblies. Heretofore the chairs occupied a fixed position relative to the brake beam and were not adjustable in a horizontal plane or to and from the brake beam although, in some instances, the track member wasmade adjustable to permit shifting of the inclined portion relative to the chair.

In the present improvement, the chair is adjustable lengthwise of the track member so as to increase or decrease the distance be tween the brake beam and the track memher, which latter is disposed at an angle to said brake beam.

Further objects of the invention are to provide simple and eflicient means for effecting the adjustment of the chair in a horizontal plane or longitudinally of the track member and to provide suitable means for mounting saidchair on the brake beam.

WVith these and other objects in View, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in Which- Figure 1 is a view taken longitudinally of the track member and showing the brake beam parts and the spring plank in trans verse cross section.

Figure '2 is a fragmental plan view of Figure 1.

Figure 3 is a vertical cross section taken on line 3-3 of Figure 1.

Figure 4 is a view similar to Figure 1 and showing a modified form of the chair and the supporting means therefor.

Figure 5 is a vertical crosssection taken on line 55 of Figure 4.

Figure 6 shows another modified form of my invention.

Figure 7 shows a further modified form wherein the chair carrying member is supported on the compression member of the trussed brake beam.

Figure 8 is a top plan view of Figure 7.

Figure 9 is another modified form wherein the chair carrying member is provided with a plurality of seats for receiving the chair interlocking means.

Figure 10 is a vertical cross section taken on line 10-10 of Figure 9.

Fi ure 11 illustrates a form similar to Figure 9 but provided with an extension for positioning the chair forwardly of the tension member of the brake beam,

Figure 12 is a top plan view of Figure 11.

Figure 13 is a vertical cross section taken on line 1313 of Figure 11.

Figure 14 is a vertical cross section taken through the extension of said chair carrying member and showing the chair arranged thereon.

Figure 15 shows a modified form in which the intermediate chair receiving portion is disposed horizontally and the extension of" said chair carrying member is arranged vertically.

Figure 16 shows a modified form wherein the chair carrying member is attached to the tension member of the brake beam.

Figure 17 is another modified form of my invention wherein the chair is carried by an extension formed on the nose of the strut.

Figure 18 is a vertical cross section taken on line 18l8 of Figure 17.

Figure 19 is another modified form of my invention wherein the chair is carried by the strut at points disposed intermediate the compression and tension members of the brake beam.

Figure 20 is an enlarged detail viewof the chair and portion of the strut shown in Figure 19.

Referring by numeralst-o the accompanying drawings, 10 indicates a spring plank or other suitable part of a truck to which is attached a track member 11 having inclined portions 11 which underlie a brake beam 12, in the present instance consisting of compression member 14 and a tension member 15. Slidably supported on track port-ion 11 is a chair 16 which forms a fourth point support for the brake beam and is fixed to a chair carrying member 17, the latter being secured at one end to compression member 1 1 as indicated at 18 andbeing provided at its opposite end with a seat 19 for receiving tension member 15. Chair 16 is secured to carrying member 17 by suitable fastening devices, such as bolt and nut 20. and member 17 is provided with a vertically disposed slot arranged longitudinally in said member for accommodating bolt 20 so that chair 16 can be adjusted in a horizontal plane on member 17 longitudinally of track portion 11*.

By moving chair 16 longitudinally of member 17, said chair can be brought in supporting contact with track 11' with the brake beam occupying a predetermined position so that when the brakes are applied and said brake beam is caused to move forwardly, chair 16 will ride upon the inclined portion 11'* and raise said brake beam in accordance with the inclination of track portion 11 to preserve proper operative position of said brake beam. When chair 16 is properly adjusted on member 17, fastening devices 20 are tightened to secure said chair in adjusted position and prevent the displacement thereof. Chair 16 is provided with depending side lips 16 which extend on each side of track member 11 and prevent movement of said chair about the axis of fastening devices 20.

In the form shown in Figures 4 and 5, chair carrying member 22 is secured at one end to compression member 14 by fastening devices 23 and is provided at its opposite end with a tension member seat 24 which is formed by splitting the upwardly presented end of member 22 and bending the split portions in opposite directions to form a V-shaped seat. Chair 25 is formed of a strap bent into U-shape form with one end deflected in a horizontal direction for re ceiving the head of a bolt and nut fastening device 26. The opposite end is provided with a reduced extension or lip 27 which is disposed in the slot 28 formed in member 22 for receiving the bolt and nut fastening device 26. In this manner extension 27 prevents displacement of the .chair and maintains the latter in proper alignment with the carrying member and the track member 11 In the form shown in Figure 6, rod 29 is bent at one end to provide an offset portion 30 which is threaded and extends through an aperture formed in compression member 14 and is secured thereto by nuts 31 bearing against the opposite sides of said compression member. The opposite end of said rod is bent to provide a semi-circular seat 32 for receiving tension member 15. A chair 34 is slidably supported on track portion 11 and is provided with a seat for receiving rod 29 whereby said chair may be adjusted longitudinally of said rod and clamped in adjusted position by fastening devices 35.

In the form shown in Figures 7 and 8, a chair carrying member 36 is secured at one end to a brake beam or compression member 14 and extends forwardly and transversely therefrom. The extendingmhorizontal portion is provided with a longitudinally disposed slot 37 for adjustably receiving fastening devices 38 of a chair 39. The cooperating or interengaging portions of extension 37 and chair 39 are provided with transverse serrations to prevent displacement of said chair when fastening devices 38 are tightened.

In the form shown in Figures 9 and 10, chair carrying member 40 which is rectangular in cross section is secured at one end to compression member 14 and has its opposite end formed with a seat 41 for receiving tension member 15. Member 40 is provided with a series of horizontallyand transversely disposed apertures 42 for receiving a pin 44 of a chair 45. Apertures 42 are arranged in a horizontal row so that said chair can be moved or adjusted in horizontal plane and longitudinally of track member 11 by removing pin 44 and shifting chair 45 in the proper direction into alignment with the respective aperture'42. Pin 44 is preferably locked against withdrawal by a cotter pin 46. y

In the form shown in Figures 11 to 14', chair carrying member 47, in addition to being provided with horizontally disposed apertures 48 for receiving pin 49, is provided with a horizontally disposed extension 47 having formed therein a series of vertically disposed apertures 50 for receiving pin 49 when chair 51 is arranged on said extension. In order to take care of the variation in the distances between track member 11 and apertures 48 and 50, respectively, chair member 51 is provided with two rubbing shoes 52 and 53which are arranged at right angles to each other and spaced unequally from the axis of said chair member, shoe 52 being spaced a greater distance from the axis of the chair and designed to be used when the chair is attached to the intermediate portion 47, as shown in Figures -11 and. 13, while shoe 53 is locatedclose to the axis of the chair and is designedto be used when the chair is arranged on extension 50 as shown in Figure 14.

In the form shown in Figure 15, which is similar to the preceding forms, the intermediate portion 54 is disposed horizontally and is provided with a series of vertically disposed apertures 55 arranged in a horizontal row and extension-56 is disposed vertically and is provided with a series of horizontal apertures 57 arranged in a horizontal row.

In the form shown in Figure 16, a chair carrying member 58 is secured to the tension member 15 and is clamped in position thereon by suitable securing devices 59 and projects rearwardly toward tension member 14. Member 58 is disposed horizontally and is provided with a longitudinally disposed slot for receiving the shank portion 60 of a rubbing shoe or chair 61. Portion 60 is threaded and receives a nut 62 by means of which shoe 61 is secured in position. By loosening said nut, shoe 61 can be moved in a horizontal plane longitudinally of member 58 to adjust said shoe relative to the inclined track 11. y i

In the preceding forms, a chair was used as a fourth point' support for the brake beam. In the following forms the chair is supported by the strut of the brake beam and forms a third point support for the latter.

In the form shown in Figures 17 and 18, a strut 6a is provided with an extension or having formed therein a series of horizontal apertures disposed in a horizontal row for receiving a pin 65 of a chair 66. Extension 64 projects forwardly beyond tension member 15.

In the form shown in Figures 19 and 20 a strut member 67 is formed with a longitudinally disposed fin or plate 67 provided with a series of horizontally disposed apertures 68 disposed in a horizontal row for receiving a pin 69 of a chair 70. In this construction, the nose extension is dispensed with and the chair is supported by the strut at a point intermediate its ends. By placing pin 69 in the proper apertures 68, chair 70 can be adjusted in a horizontal plane relative to the strut and the brake beam so as to provide proper supporting contact between the brake beam and the track member 11.

I claim:

1. An auxiliary support for brake beams comprising a member adapted to be carried by a brake beam part, and a sliding chair adapted to be supported on an inclined track member and adjustable on said member in a substantially horizontal plane to vary the distance between said brake beam and said inclined track member.

2. A third or fourth point support for brake beams comprisinga member adapted to be carried by a brake beam and a chair carried by said member and adjustable in a substantially horizontal plane for correlating said chair with an inclined track member and varying the elevation of said brake beam.

3. An auxiliary support for brake beams comprising an inclined track member and a chair carried by a brake beam and adjustable in a substantially horizontal plane relative thereto for bringing said chair into sliding engagement with said track member.

4. A supplemental point support for brake beams comprising an inclined track member carried by a truck part and underlying a brake beam, and a chair carried by a brake to shift the point of interengagement of said brake beam with said inclined track member and vary the disposition of the brake beam.

5. An auxiliarysupport for brake beams comprising a fixed inclined track member, and a chair slidably supported by said track member, said chair being adapted to be carried by a brake beam part and being adjustable in a substantially horizontal plane relative thereto to engage said track member at differentially elevated points.

6. An auxiliary support for brake beams comprising in combination with a fixed track member inclined from the horizontal, of a chair carried by a brake beam and slidably supported on said track member, said chair being adjustable in a substantially horizontal plane relative to said inclined track member for adjusting the elevation of said brake beam.

7. A supplemental support for brake beams comprising the combination with a brake beam, of a sliding chair carried by a part of said brake beam and adjustable relative thereto to vary the supplemental point of support of said brake beam in a substantially horizontal plane.

8. In a supplemental support for brake beams, the combination with a brake beam and a fixed track inclined from the horizontal, of a sliding shoe carried by said brake beam and adjustable relative thereto in a substantially horizontal plane to adjust the point of engagement of said shoe with said inclined track longitudinally thereof.

9. A supplemental support for brake beams comprising the combination with an inclined track member, of an arm carried by said brake beam and disposed above and in spaced relation with said track member, and a depending chair carried by said arm and slidably supported on said track member, said chair being adjustable longitudinally of said arm to adjust the chair longitudinally of said inclined track member and raise or lower the brake beam accordingly.

10. A supplemental support for brake beams comprising in combination with a brake beam, an inclined track member underlying the same, and a chair carried by said brake beam and adjustable longitudinally of said track member to change the point of contact of said chair longitudinally of said inclined track portion.

11. In a brake beam, a substantially horizontal element extending transversely of the length of the beam, a chair, and means for securing said chair at different points along said element.

12. In a brake beam, a compression member, a tension member, a transverse connection between said members, a sliding chair, and means for mounting said chair at difierent points along said connection.

. 13. In a brake beam,-a compression member, a tension member, a transverse connection between said members, a sliding chair, and means for mounting said chair at difl'erent points along said connection and between said members.

14. In a brakeibeam, a compression mem ber, a tension member, a strut between said members, a connection extending between and fixed to said members intermediate said strut and the end ofthebrakebeamya slid-v ing chair, and means for detachably-mount-i mg said CllalIDIlSaldconnection.

15. In a brake beam,.a compression member, a tension member,:a strutbetween Silidrw HERBERT W. 'EKHOLM. 

